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New Expressions to Apply the Variation Operation Strategy in Engineering Tools Using Pumps Working as Turbines

Author

Listed:
  • Frank A Plua

    (Civil and Environmental Engineering Department, Escuela Politécnica Nacional, Quito 170525, Ecuador)

  • Francisco-Javier Sánchez-Romero

    (Rural and Agrifood Engineering Department, Universitat Politècnica de València, 46022 Valencia, Spain)

  • Victor Hidalgo

    (Mechanical Engineering Department, Escuela Politécnica Nacional, Quito 170525, Ecuador)

  • P. Amparo López-Jiménez

    (Hydraulic and Environmental Engineering Department, Universitat Politècnica de València, 46022 Valencia, Spain)

  • Modesto Pérez-Sánchez

    (Hydraulic and Environmental Engineering Department, Universitat Politècnica de València, 46022 Valencia, Spain)

Abstract

The improvement in energy saving aspects in water systems is currently a topic of major interest. The utilization of pumps working as turbines is a relevant strategy in water distribution networks consisting of pressurized pipes, using these machines to recover energy, generate green energy and reduce leakages in water systems. The need to develop energy studies, prior to the installation of these facilities, requires the use of simulation tools. These tools should be able to define the operation curves of the machine as a function of the flow rate. This research proposes a new strategy to develop a mathematics model for pumps working as turbines (PATs), considering the modified affinity laws. This proposed model, which can be input into hydraulic simulation tools (e.g., Epanet, WaterGems), allows estimation of the head, efficiency, and power curves of the PATs when operating at different rotational speeds. The research used 87 different curves for 15 different machines to develop the new model. This model improves the results of the previously published models, reducing the error in the estimation of the height, efficiency, and power values. The proposed model reduced the errors by between 30 and 50% compared to the rest of the models.

Suggested Citation

  • Frank A Plua & Francisco-Javier Sánchez-Romero & Victor Hidalgo & P. Amparo López-Jiménez & Modesto Pérez-Sánchez, 2021. "New Expressions to Apply the Variation Operation Strategy in Engineering Tools Using Pumps Working as Turbines," Mathematics, MDPI, vol. 9(8), pages 1-17, April.
    • Handle: RePEc:gam:jmathe:v:9:y:2021:i:8:p:860-:d:535983
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    References listed on IDEAS

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    1. Stefanizzi, M. & Filannino, D. & Capurso, T. & Camporeale, S.M. & Torresi, M., 2023. "Optimal hydraulic energy harvesting strategy for PaT installation in Water Distribution Networks," Applied Energy, Elsevier, vol. 344(C).

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